Modeling the encoding structure and spatial resolution of photon counting imagers with Vernier anode readout

Hao Yang; Baosheng Zhao; Qiurong Yan; Yong’an Liu

doi:10.3788/COL201614.121102

Journals >Chinese Optics Letters >Volume 14 >Issue 12 >Page 121102 > Article

Chinese Optics Letters
Vol. 14, Issue 12, 121102 (2016)

Modeling the encoding structure and spatial resolution of photon counting imagers with Vernier anode readout

Hao Yang^1、*, Baosheng Zhao², Qiurong Yan³, and Yong’an Liu²

Author Affiliations

¹Shaanxi Key Laboratory of Optical Information Technology, School of Science, Northwestern Polytechnical University, Xi’an 710072, China

²State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an 710119, China

³Department of Electronic Information Engineering, Nanchang University, Nanchang 330031, China

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DOI: 10.3788/COL201614.121102 Cite this Article Set citation alerts

Hao Yang, Baosheng Zhao, Qiurong Yan, Yong’an Liu. Modeling the encoding structure and spatial resolution of photon counting imagers with Vernier anode readout[J]. Chinese Optics Letters, 2016, 14(12): 121102 Copy Citation Text

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Abstract

We present the spatial resolution estimation methods for a photon counting system with a Vernier anode. A limiting resolution model is provided according to discussions of surface encoding structure and quantized noise. The limiting resolution of a Vernier anode is revealed to be significantly higher than that of a microchannel plate. The relationship between the actual spatial resolution and equivalent noise charge of a detector is established by noise analysis and photon position reconstruction. The theoretical results are demonstrated to be in good agreement with the experimental results for a 1.2 mm pitch Vernier anode.